Customize room members view controller (add search option, open details).

matrixConsole/ViewController/RoomMembersViewController.m

@@ -0,0 +1,219 @@
+/*
+ Copyright 2015 OpenMarket Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "RoomMembersViewController.h"
+#import "MemberViewController.h"
+
+#import "MatrixSDKHandler.h"
+
+#import "RageShakeManager.h"
+
+@interface RoomMembersViewController () {
+
+    // Search
+    UISearchBar  *roomMembersSearchBar;
+    BOOL searchBarShouldEndEditing;
+    BOOL shouldScrollToTopOnRefresh;
+    
+    // Keep reference on the current member view controller to release it correctly
+    MemberViewController *currentMemberViewController;
+    
+    // The selected member
+    MXRoomMember *selectedMember;
+}
+
+@end
+
+@implementation RoomMembersViewController
+
+- (void)awakeFromNib {
+    [super awakeFromNib];
+    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
+        self.preferredContentSize = CGSizeMake(320.0, 600.0);
+    }
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    UIBarButtonItem *searchButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(search:)];
+    UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(inviteNewMember:)];
+    self.navigationItem.rightBarButtonItems = @[searchButton, addButton];
+    
+    // Setup `MXKRoomMemberListViewController` properties
+    self.rageShakeManager = [RageShakeManager sharedManager];
+    
+    // The view controller handles itself the selected roomMember
+    self.delegate = self;
+}
+
+- (void)dealloc {
+    if (currentMemberViewController) {
+        [currentMemberViewController destroy];
+        currentMemberViewController = nil;
+    }
+    selectedMember = nil;
+    roomMembersSearchBar = nil;
+}
+
+- (void)didReceiveMemoryWarning {
+    [super didReceiveMemoryWarning];
+    // Dispose of any resources that can be recreated.
+}
+
+- (void)viewWillDisappear:(BOOL)animated {
+    [super viewWillDisappear:animated];
+    
+    // Leave potential search session
+    if (roomMembersSearchBar) {
+        [self searchBarCancelButtonClicked:roomMembersSearchBar];
+    }
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+    [super viewDidAppear:animated];
+    
+    if (currentMemberViewController) {
+        [currentMemberViewController destroy];
+        currentMemberViewController = nil;
+    }
+}
+
+
+#pragma mark - Internal methods
+
+- (void)refreshRoomMembersDisplay {
+    
+    if (shouldScrollToTopOnRefresh) {
+        [self scrollToTop];
+        shouldScrollToTopOnRefresh = NO;
+    }
+}
+
+- (void)scrollToTop {
+    // stop any scrolling effect
+    [UIView setAnimationsEnabled:NO];
+    // before scrolling to the tableview top
+    self.tableView.contentOffset = CGPointMake(-self.tableView.contentInset.left, -self.tableView.contentInset.top);
+    [UIView setAnimationsEnabled:YES];
+}
+
+#pragma mark - Actions
+
+- (void)search:(id)sender {
+    if (!roomMembersSearchBar) {
+        // Check whether there are data in which search
+        if ([self.dataSource tableView:self.tableView numberOfRowsInSection:0]) {
+            // Create search bar
+            roomMembersSearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
+            roomMembersSearchBar.showsCancelButton = YES;
+            roomMembersSearchBar.returnKeyType = UIReturnKeyDone;
+            roomMembersSearchBar.delegate = self;
+            searchBarShouldEndEditing = NO;
+            // add it to the tableHeaderView
+            // do not create a header view
+            // the header view is refreshed every time there is a [tableView reloaddata]
+            // i.e. there is a removeFromSuperView call, the view is added to the tableview..
+            // with a first respondable view, IOS seems lost to find the first responder
+            // so, the keyboard is always displayed and can not be dismissed
+            // tableHeaderView is never removed from superview so the first responder is not lost
+            self.tableView.tableHeaderView = roomMembersSearchBar;
+
+            [roomMembersSearchBar becomeFirstResponder];
+            
+            [self scrollToTop];
+        }
+    } else {
+        [self searchBarCancelButtonClicked: roomMembersSearchBar];
+    }
+}
+
+- (void)inviteNewMember:(id)sender {
+    // TODO GFO
+}
+
+#pragma mark - Segues
+
+- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
+    if ([[segue identifier] isEqualToString:@"showDetails"]) {
+        
+        if ([[segue destinationViewController] isKindOfClass:[MemberViewController class]]) {
+            if (selectedMember) {
+                currentMemberViewController = (MemberViewController *)[segue destinationViewController];
+                currentMemberViewController.mxRoomMember = selectedMember;
+                currentMemberViewController.mxRoom = [[MatrixSDKHandler sharedHandler].mxSession roomWithRoomId:self.dataSource.roomId];
+            }
+        }
+    }
+}
+
+#pragma mark - MXKDataSourceDelegate
+- (void)dataSource:(MXKDataSource *)dataSource didCellChange:(id)changes {
+    [super dataSource:dataSource didCellChange:changes];
+    
+    [self refreshRoomMembersDisplay];
+}
+
+#pragma mark - MXKRoomMemberListViewControllerDelegate
+- (void)roomMemberListViewController:(MXKRoomMemberListViewController *)roomMemberListViewController didSelectMember:(MXRoomMember *)member {
+    
+    // Report the selected member and open details view
+    selectedMember = member;
+    [self performSegueWithIdentifier:@"showDetails" sender:self];
+}
+
+#pragma mark - UISearchBarDelegate
+
+- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
+    searchBarShouldEndEditing = NO;
+    return YES;
+}
+
+- (BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar {
+    return searchBarShouldEndEditing;
+}
+
+- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
+    
+    // Apply filter
+    shouldScrollToTopOnRefresh = YES;
+    if (searchText.length) {
+        [self.dataSource searchWithPatterns:@[searchText]];
+    } else {
+        [self.dataSource searchWithPatterns:nil];
+    }
+}
+
+- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
+    // "Done" key has been pressed
+    searchBarShouldEndEditing = YES;
+    [searchBar resignFirstResponder];
+}
+
+- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
+    
+    // Leave search
+    searchBarShouldEndEditing = YES;
+    [searchBar resignFirstResponder];
+    roomMembersSearchBar = nil;
+    self.tableView.tableHeaderView = nil;
+    
+    // Refresh display
+    shouldScrollToTopOnRefresh = YES;
+    [self.dataSource searchWithPatterns:nil];
+}
+
+@end